RU51740U1 - STAND FOR RESEARCH OF ELEMENTS OF THE STEERING PART OF A WHEELED VEHICLE - Google Patents

Abstract

The invention relates to equipment for the study of the elements of the undercarriage of wheeled vehicles.

The problem is solved as follows, in this stand, the device for exciting vibrations is made up of an electric motor, a gearbox, two continuously engaged gears and two unbalanced masses, while one gear and one unbalanced mass are mounted on one shaft connected through elastic couplings with an electric motor and a gearbox, and the second gear is mounted on the opposite shaft and connected to the shaft on which the second unbalanced mass is mounted through the coupling, which serves to change oscillation planes, shafts are located on supporting racks installed on the base, in addition, the stand is equipped with a clutch device for the vehicle and a device for moving the stand, which is made in the form of racks with wheels, the racks are located under the base and are pivotally connected to them.

Description

The invention relates to equipment for the study of the elements of the undercarriage of wheeled vehicles.

A well-known stand for the study of the elements of the undercarriage of a wheeled vehicle (Copyright certificate No. 556368, class G 01 M 17 / 04.1973), containing a base with uprights, one of which is upper articulated sprung and unsprung masses of the vehicle pivotally connected and lower horizontal beams, and a device for exciting oscillations of the elements of the chassis.

The disadvantages of this stand include its limited functionality.

Closest to the proposed technical essence is a stand for researching the elements of the undercarriage of a wheeled vehicle (Copyright certificate No. 993089, class G 01 M 17/04, published January 30, 83), containing a base with racks, one of which is connected the upper and lower horizontal beams, and a device for exciting vibrations of the elements of the chassis made up of a vertical air spring, a horizontal power cylinder and a hinged three link. This design allows you to excite vibrations in the vertical plane. In addition, the stand is equipped with lockable telescopic racks for separate studies of the elastic properties of suspension elements and tires.

The disadvantages of this technical solution is the need to remove the investigated elements from the vehicle and install them on a test bench, the complexity of the design of the device for exciting vibrations and its limited functionality that does not allow changing the direction of the vibrations during the test.

The objectives of this invention are:

1) creating a stand with a device for exciting vibrations of a simplified design;

2) the expansion of functionality by changing the plane of oscillation;

3) creating the possibility of researching the elements of the chassis of a wheeled vehicle without disassembling it.

The tasks are achieved in that the stand containing the base with racks, a device for coupling it with

vehicle, a device for exciting vibrations, made mobile and equipped with a clutch with which changes the direction of oscillation in the study of the elements of the chassis of a wheeled vehicle. The device for exciting vibrations is made up of an electric motor, a gearbox, two continuously engaged gears and two unbalanced masses, with one gear and one unbalanced mass mounted on one shaft connected through elastic couplings with the electric motor and gearbox, and the second gear mounted on the opposite the shaft and is connected with the shaft on which the second unbalanced mass is installed through the coupling, which serves to change the plane of oscillations, the shafts are located on the supporting posts, is installed based on. In addition, the stand is equipped with a clutch device with a vehicle and a device for moving the stand, which is made in the form of racks with wheels, the racks are located under the base and are pivotally connected with them.

Figure 1 shows the proposed stand, the main view; figure 2 is a top view; figure 3 is a left view.

The stand for the study of the elements of the running gear of a wheeled vehicle (see figure 2) contains a device for exciting vibrations, consisting of an electric motor 1, gearbox 2, and two gears 3 of constant engagement and two unbalanced masses 4. Moreover, one gear 3 and one unbalanced the mass 4 is mounted on the shaft 5 connected through elastic couplings with the gearbox 2 and the electric motor 1, and the second gear 3 is mounted on the shaft 6 which is connected to the shaft 7 through the coupling 8 to change the direction of oscillation. A second unbalanced mass 4 is installed on the shaft 7. The stand is equipped with a device 9 for coupling it with the diagnosed vehicle, consisting of two horizontal grips and a screw clamp (Fig. 1). This device is one of the grips mounted on the base 10, on which are located the support posts 11 with crossbars 12 (Fig. 3) on which the electric motor 1, gearbox 2 and bearing bearings 13 of the shafts 5, 6, 7 are installed. The base 10 is equipped with supports 14. The stand contains a device for its movement, consisting of racks 15 and 16 with wheels. Racks 15 and 16 are located under the base 10 and are connected with it pivotally with the possibility of adopting horizontal or stable vertical positions.

The coupling 8 is designed to change the direction of oscillation by changing the angular position of one unbalanced mass 4

relative to another unbalanced mass 4. Made, for example, spline.

Unbalanced masses 4 are, for example, cranks mounted on shafts 5 and 7 with weights at the ends.

The stand works as follows.

The stand is rolled up to the front or rear of the vehicle, on the frame of which a free grip of the clutch device 9 is fixed and clamped with a screw clamp. The rack 14 of the transportation device is installed in a horizontal position. The car must be in a braked condition using the parking brake system.

When the electric motor 1 is switched on, the shaft 5 is rotated through the gear 2, and through the gears 3, the rotation is transmitted to the shaft 6 and through the coupling 8 to the shaft 7. The gears 3 rotate the shaft 5 and the shaft 7 towards each other and, accordingly, unbalanced masses 4 receive the same rotation, which mounted on these shafts. During the rotation of unbalanced masses under the action of centrifugal forces, the stand and the vehicle oscillate with a given amplitude. Gears 3 provide rotation of unbalanced masses 4 towards each other, creating oscillations in one plane.

To change the plane of oscillation, the clutch 8 is turned off, thus disconnecting the shaft 7 from the shaft 6. Then, by turning the clutch 8 on a certain number of slots, an unbalanced mass 4 is placed on it, located on the shaft 7, relative to the unbalanced mass 4 on the shaft 5 at an angle necessary for transferring vibrations from one plane to another (from horizontal to vertical and vice versa).

The proposed stand design allows you to:

1) to expand its functionality by providing oscillations of the elements of the chassis in various planes;

2) to simplify its design by using a mechanical device to excite vibrations;

3) to do without disassembling the vehicle through the use of a device for coupling with him.

Claims (1)

A stand for researching the elements of the running gear of a wheeled vehicle, comprising a base with uprights, a device for exciting vibrations, characterized in that the said device is made up of an electric motor, a gearbox, two gears and two unbalanced masses that are constantly engaged, one gear and one unbalanced mass is mounted on one shaft connected through elastic couplings with an electric motor and gearbox, and the second gear is mounted on the opposite shaft and connected to a shaft on which a second unbalanced mass is mounted through a clutch used to change the plane of oscillation, the shafts are located on supporting racks installed on the base, in addition, the stand is equipped with a clutch device for the vehicle and a device for moving the stand, which is made in the form of racks with wheels , the racks are located under the base and are connected pivotally to them.